Thousand-Faced Shadow + Great Whale + Prosperous Thief

Prerequisites

• Prosperous Thief and Great Whale do not have summoning sickness.
• An opponent cannot block Prosperous Thief or Great Whale.
• You control up to seven lands that can tap to produce at least .

Steps

1. 1Declare Great Whale and Prosperous Thief as attackers.
2. 2When they aren't blocked, activate up to seven lands you control by tapping them, adding at least .
3. 3Activate Thousand-Faced Shadow's ninjutsu ability by paying and returning Prosperous Thief from the battlefield to your hand, putting Thousand-Faced Shadow onto the battlefield from your hand tapped and attacking.
4. 4When Thousand-Faced Shadow enters the battlefield, it triggers, creating a token copy of Great Whale that is tapped and attacking.
5. 5When the Great Whale token enters the battlefield, it triggers, untapping up to seven lands.
6. 6Activate Prosperous Thief's ninjutsu ability by paying and returning Thousand-Faced Shadow from the battlefield to your hand, putting Prosperous Thief onto the battlefield from your hand tapped and attacking.
7. 7Repeat from step 2.
8. 8Deal combat damage using the Great Whale tokens, dealing infinite combat damage to the defending opponent.
9. 9If you control up to seven lands that can tap to produce at least , this combo nets infinite mana.

Effects

• Infinite combat damage to one opponent
• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite untap of lands you control